Arp Rocker Arm Stud - Pedestal - 8 mm x 1.25 Base Thread - 8 mm x 1.00 Top Thread - 2.00 in Effective Stud Length - Chromoly - Black Oxide - Dodge Cummins - Kit-247-7201--Notes: State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO